THE COMPARATIVE MORPHOLOGY OF THE ORDER STREPSIPTERA TOGETHER WITH RECORDS AND DESCRIPTIONS OF INSECTS. By W. DwiGHT Pierce, Of the Bureau of Entomology, United States Department of Agriculture. INTRODUCTION. Since publishing in 1911 ^ a number of additional species and new records of the Strepsiptera as a supplement to the Monographic Re-vision in Bulletin 66 of the United States National Museum, enough new material has been accumulated to occasion this second supple-ment. It is the expectation of the writer from time to time to con-tinue this series of papers summarizing all the known material on this interesting order of parasitic insects. Material has been received from T. L. Jones (Porto Rico), N. Kourdumoff (Russia), T. B. Fletcher (India), F. Muir (Hawaii), H. G. Champion (England), J. P. Kryger (Denmark), S. E. Crumb (Tennessee), and H. F. Loomis, R. C. Shannon, and J. C. Crawford (Maryland), and much of interest has been recently found in the new acquisitions of the United States National Museum. Determi-nations of hosts have very kindly been made by Messrs. Crawford, Rohwer, Viereck, and the late Mr. Heidemann. A large number of errata and corrections are noted herein. The writer is under obligations to Dr. Karl Hofeneder (Austria) for cor-rections of many of the errors, specially the bibliographic. The most serious errors occur in the Genera Insectorum in the reference to figures and were due to a recasting of the plates by the editors and the addition of many small figures after the page proofs had been seen. No mention of these figures was made in the text or explana-tion of plates. The same headings and letterings of paragraphs are used as in Bulletin 66. 1 Proc. U. S. Nat. Mus., vol. 40, No. 1834, May 17, 1911, pp. 487-511. Proceedings U. S. National Museum. Vol. 54— No. 2242. 391
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